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You searched on: Author: nathanael heckert

Displaying records 31 to 40 of 48 records.
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31. A Statistical Test Suite for Random and Pseudorandom Number Generators for Cryptographic Applications
Series: Special Publication (NIST SP)
Report Number: 800-22 Rev 1a
Published: 9/16/2010
Authors: Lawrence E Bassham, Andrew L Rukhin, Juan Soto, James R Nechvatal, Miles E. Smid, Stefan D Leigh, M Levenson, M Vangel, Nathanael A Heckert, D L. Banks
Abstract: This paper discusses some aspects of selecting and testing random and pseudorandom number generators. The outputs of such generators may be used in many cryptographic applications, such as the generation of key material. Generators suitable for use i ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=906762

32. A Risk-Uncertainty Formula Accounting for Uncertainties of Failure Probability and Consequence in a Nuclear Powerplant
Published: 7/20/2010
Authors: Jeffrey T Fong, Stephen R Gosselin, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert, Robert E Chapman
Abstract: This paper is a continuation of a recent ASME Conference paper entitled "Design of a Python-Based Plug-in for Bench-marking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data" (PVP2009-77974). In that paper, which was co-authore ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905670

33. AN ECONOMICS-BASED INTELLIGENCE (EI) TOOL FOR PRESSURE VESSEL & PIPING (PVP) FAILURE CONSEQUENCE ESTIMATION
Published: 7/20/2010
Authors: Robert E Chapman, Jeffrey T Fong, David T Butry, Douglas S Thomas, James J Filliben, Nathanael A Heckert
Abstract: This paper is built around ASTM E 2506, Standard Guide for Developing a Cost-Effective Risk Mitigation Plan for New and Existing Constructed Facilities. E 2506 establishes a three-step protocol--perform risk assessment, specify combinations of risk ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=905671

34. Design of a Python-based Plug-in for Benchmarking Probabilistic Fracture Mechanics Computer Codes with Failure Event Data
Published: 7/27/2009
Authors: Jeffrey T Fong, Roland deWit, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert, Stephen R Gosselin
Abstract: In a 2007 paper entitled "Application of Failure Event Data to Benchmark Probabilistic Fracture Mechanics (PFM) Computer Codes" (Simonen, F. A., Gosselin, S. R., Lydell, B. O. Y., Rudland, D. L., & Wikowski, G. M. Proc. ASME PVP Conf., San ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902444

35. A Design-of-Experiments Plug-In for Estimating Uncertainties in Finite Element Simulations
Published: 5/18/2009
Authors: Jeffrey T Fong, Roland deWit, Pedro Vincente Marcal, James J Filliben, Nathanael A Heckert
Abstract: The objective of this paper is to introduce an economical and user-friendly technique for estimating a specific type of finite element simulation uncertainties, or, "error bars," for a class of mathematical models, of which no closed-form o ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902335

36. Through-focus Scanning and Scatterfield Optical Methods for Advanced Overlay Target Analysis
Published: 9/1/2008
Authors: Ravikiran Attota, Michael T. Stocker, Richard M Silver, Nathanael A Heckert, Hui Zhou, Richard J Kasica, Lei Chen, Ronald G Dixson, Ndubuisi George Orji, Bryan M Barnes, Peter Lipscomb
Abstract: In this paper we present overlay measurement techniques that use small overlay targets for advanced semiconductor applications. We employ two different optical methods to measure overlay using modified conventional optical microscope platforms. They ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=902294

37. A Web-Based Data Analysis Methodology for Estimating Reliability of Weld Flaw Detection, Location, and Sizing
Published: 7/27/2008
Authors: Jeffrey T Fong, Owen F Hedden, James J Filliben, Nathanael A Heckert
Abstract: Recent advances in computer technology, intemet communication networks, and fmite element modeling and analysis capability have made it feasible for engineers to accelerate the feedback loop between the field inspectors of a structure or component fo ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152099

38. Robust Engineering Design for Failure Prevention
Published: 7/27/2008
Authors: Jeffrey T Fong, James J Filliben, Nathanael A Heckert, Roland deWit, Barry Bernstein
Abstract: To advance the state of the art of engineering design, we introduce a new concept on the "robustness" of a structure by measuring its ability to sustain a sudden loss of a part without causing an immediate collapse.  The concept is bas ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152089

39. Uncertainty Estimate of Charpy Data Using a 5-factor 8-run Design of Experiments
Published: 7/27/2008
Authors: Charles G. Interrante, Jeffrey T Fong, James J Filliben, Nathanael A Heckert
Abstract: Scatter in laboratory data with duplicates on Charpy impact tests is analyzed by identifying several sources of variability such as temperature, manganese sulfide, initial strain, mis-orientation, and notch radius in order to estimate the predictive ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=152114

40. Design of Experiments Approach to Verification and Uncertainty Estimation of Simulations based on Finite Element Method
Published: 6/11/2008
Authors: Jeffrey T Fong, James J Filliben, Nathanael A Heckert, Roland deWit
Abstract: A fundamental mathematical modeling and computational tool in engineering and applied sciences is the finite element method (FEM).  The formulation of every such problem begins with the building of a mathematical model with carefully chosen simp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=150675



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